I've applied to both for a general dermatology elective but I was wondering which one is better in quality with respect to residency training, teaching conferences, quality of attending faculty, research, collegiality, etc.? Is one more rigorous than the other?

UT-Houston's program has Memorial Hermann, LBJ General Hospital, MD Anderson Cancer Center, and the VA.

Baylor College of Medicine's program has Texas Children's Hospital, St. Luke's, Methodist, Baylor Clinic, Ben Taub, and the VA.

I believe scumbag has voted for Houston because of the life experiences you can gain there, with examples provided. At your stage of the game this is much more important than rotating at a program for their overall rank, imo. You want to make personal connections and get letters! The rank of a program isn't going to give you this alone. Contacts will.

I bet Baylor has some great contacts too. Every program probably does. This is what you should be more concerned with, imo.